bors [Fri, 16 Oct 2020 07:45:42 +0000 (07:45 +0000)]
Auto merge of #6178 - josephlr:sync-from-rust, r=phansch
Sync from rust
Fix rustc breakage by running:
```rust
git subtree push -P src/tools/clippy git@github.com:josephlr/rust-clippy sync-from-rust
```
and then adding a commit that runs `cargo dev fmt`
est31 [Wed, 14 Oct 2020 16:42:13 +0000 (18:42 +0200)]
Remove rustc_session::config::Config
The wrapper type led to tons of target.target
across the compiler. Its ptr_width field isn't
required any more, as target_pointer_width
is already present in parsed form.
it took me a while to figure out why `cargo clippy -- -Aclippy::pedantic -Wclippy::items-after-statements` still showed me *all* the lints. At first I thought it was due to the missing spaces in the current example and I debugged that until I stumbled across an issue noting that you have to touch a random file or run `cargo clean` when you're running clippy repeatedly on an unchanged codebase. This PR is an attempt to save the next person some time and also structure the "Allowing/denying lints" section a bit more while we're at it.
bors [Mon, 12 Oct 2020 13:49:19 +0000 (13:49 +0000)]
Auto merge of #6158 - giraffate:improve_updating_references, r=phansch
Remove the generated files by `update-references.sh` if they are empty
An empty file may be generated by `update-references.sh` and committed as is when creating a patch like https://github.com/rust-lang/rust-clippy/pull/6101#issuecomment-702076508 and https://github.com/rust-lang/rust-clippy/pull/6079#pullrequestreview-496502721. So, I think it would be helpful to add documentation, and automatically remove the generated file if it's empty.
bors [Sat, 10 Oct 2020 13:29:05 +0000 (13:29 +0000)]
Auto merge of #6154 - flip1995:ice_fixes, r=ebroto
Fix two ICEs caused by ty.is_{sized,freeze}
Fixes #6153
Properly fixes #6139
The test case in #6153 is kind of weird. Even removing one of the arguments of the `foo` function prevented the ICE. I think this test case is actually minimal.
bors [Sat, 10 Oct 2020 06:32:32 +0000 (06:32 +0000)]
Auto merge of #5727 - rail-rain:manual_memcpy_with_counter, r=flip1995
Expands `manual_memcpy` to lint ones with loop counters
Closes #1670
This PR expands `manual_memcpy` to lint ones with loop counters as described in https://github.com/rust-lang/rust-clippy/issues/1670#issuecomment-293280204
Although the current code is working, I have a couple of questions and concerns.
~~Firstly, I manually implemented `Clone` for `Sugg` because `AssocOp` lacks `Clone`. As `AssocOp` only holds an enum, which is `Copy`, as a value, it seems `AssocOp` can be `Clone`; but, I was not sure where to ask it. Should I make a PR to `rustc`?~~ The [PR]( https://github.com/rust-lang/rust/pull/73629) was made.
Secondly, manual copying with loop counters are likely to trigger `needless_range_loop` and `explicit_counter_loop` along with `manual_memcpy`; in fact, I explicitly allowed them in the tests. Is there any way to disable these two lints when a code triggers `manual_memcpy`?
And, another thing I'd like to note is that `Sugg` adds unnecessary parentheses when expressions with parentheses passed to its `hir` function, as seen here:
```
error: it looks like you're manually copying between slices
--> $DIR/manual_memcpy.rs:145:14
|
LL | for i in 3..(3 + src.len()) {
| ^^^^^^^^^^^^^^^^^^ help: try replacing the loop by: `dst[3..((3 + src.len()))].clone_from_slice(&src[..((3 + src.len()) - 3)])
```
However, using the `hir` function is needed to prevent the suggestion causing errors when users use bitwise operations; and also this have already existed, for example: `verbose_bit_mask`. Thus, I think this is fine.
changelog: Expands `manual_memcpy` to lint ones with loop counters
bors [Fri, 9 Oct 2020 23:14:58 +0000 (23:14 +0000)]
Auto merge of #6151 - bofh69:master, r=ebroto
Preserve raw strs for: format!(s) to s.to_string() lint
fixes #6142
clippy::useless_format will keep the source's string (after converting {{ and }} to { and }) when suggesting a change from format!() to .to_string() usage. Ie:
| let s = format!(r#""hello {{}}""#);
| ^^^^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `r#""hello {}""#.to_string()`
changelog: [`useless_format`]: preserve raw string literals when no arguments to `format!()` are provided.
bors [Fri, 9 Oct 2020 16:46:09 +0000 (16:46 +0000)]
Auto merge of #6130 - Ambroisie:lint-ptr-eq, r=Manishearth
New lint: Recommend using `ptr::eq` when possible
This is based almost entirely on the code available in the previous PR #4596. I merely updated the code to make it compile.
Fixes #3661.
- [ ] I'm not sure about the lint name, but it was the one used in the original PR.
- [X] Added passing UI tests (including committed `.stderr` file)
- [X] `cargo test` passes locally
- [X] Executed `cargo dev update_lints`
- [X] Added lint documentation
- [X] Run `cargo dev fmt`
bors [Fri, 9 Oct 2020 13:23:01 +0000 (13:23 +0000)]
Auto merge of #6149 - flip1995:update_actions, r=ebroto
Remove deprecated set-env from GHA
This updates all of our action dependencies and removes every usage of `set-env`. `set-env` and `add-path` has been deprecated: https://github.blog/changelog/2020-10-01-github-actions-deprecating-set-env-and-add-path-commands/
bors [Fri, 9 Oct 2020 13:02:25 +0000 (13:02 +0000)]
Auto merge of #6148 - flip1995:release_doc, r=ebroto
Update release documentation
When updating the beta branch, we want to reset, instead of rebase. Otherwise we might produce again new commits on the beta branch, that aren't on the master branch.
bors [Fri, 9 Oct 2020 12:41:08 +0000 (12:41 +0000)]
Auto merge of #6131 - Ambroisie:fix-doc-tools, r=flip1995
Rename tables to typecheck_result()
While working on #6130, I noticed that part of the documentation was updated to use `LateContext::typeck_results`, but the paragraph still referred to the old `tables` field of `LateContext`.
I've not added the PRs fixing `same_item_push` because those were backported, namely:
* [#5908](https://github.com/rust-lang/rust-clippy/pull/5908)
* [#5997](https://github.com/rust-lang/rust-clippy/pull/5997)
* [#6016](https://github.com/rust-lang/rust-clippy/pull/6016)
The following PR was reverted, so I've ignored it too:
* [#5984](https://github.com/rust-lang/rust-clippy/pull/5984)
~~Also, I took the liberty of adding a "Thanks" section, naming all the contributors to this release. I think they deserve visibility in the changelog. Please tell me if we want to add this or maybe it's redundant given we link to the PRs?~~
bors [Thu, 8 Oct 2020 22:50:29 +0000 (22:50 +0000)]
Auto merge of #6133 - JPTIZ:no-box-for-c-ffi, r=ebroto
clippy_lints: Do not warn against Box parameter in C FFI
changelog: [`boxed_local`]: don't lint in `extern fn` arguments
Fixes #5542.
When using C FFI, to handle pointers in parameters it is needed to
declare them as `Box` in its Rust-side signature. However, the current
linter warns against the usage of Box stating that "local variable
doesn't need to be boxed here".
This commit fixes it by ignoring functions whose Abi is C.
bors [Thu, 8 Oct 2020 21:33:32 +0000 (21:33 +0000)]
Auto merge of #6117 - dtolnay:string_lit_as_bytes, r=ebroto
Downgrade string_lit_as_bytes to nursery
Between #1402 (regarding `to_owned`) and #4494 (regarding `impl Read`), as well as other confusion I've seen hit in my work codebase involving string_lit_as_bytes (`"...".as_bytes().into()`), I don't think this lint is at a quality to be enabled by default.
I would consider re-enabling this lint after it is updated to understand when the surrounding type information is sufficient to unsize `b"..."` to &\[u8\] without causing a type error.
As currently implemented, this lint is pushing people to write `&b"_"[..]` which is not an improvement over `"_".as_bytes()` as far as I am concerned.
---
changelog: Remove string_lit_as_bytes from default set of enabled lints
Replace run_compiler with RunCompiler builder pattern.
RunCompiler::new takes non-optional params, and optional
params can be set using set_*field_name* method.
finally `run` will forward all fields to `run_compiler`.
bors [Thu, 8 Oct 2020 16:56:14 +0000 (16:56 +0000)]
Auto merge of #6138 - giraffate:note_that_we_follow_rustc_no_merge_policy, r=Manishearth
Add note that we follow a rustc no merge-commit policy
I think it would be better to add a note that we follow a rustc no merge-commit policy. For example, it was mentioned at https://github.com/rust-lang/rust-clippy/pull/5694#issuecomment-641871096.
clippy_lints: Do not warn against Box parameter in C FFI
Fixes #5542.
When using C FFI, to handle pointers in parameters it is needed to
declare them as `Box` in its Rust-side signature. However, the current
linter warns against the usage of Box stating that "local variable
doesn't need to be boxed here".
This commit fixes it by ignoring functions whose Abi is Cdecl.
bors [Wed, 7 Oct 2020 23:10:34 +0000 (23:10 +0000)]
Auto merge of #6128 - dtolnay:rc_buffer, r=yaahc
Downgrade rc_buffer to restriction
I think Arc\<Vec\<T\>\> and Arc\<String\> and similar are a totally reasonable data structure, as observed by others in the comments on [#6044](https://github.com/rust-lang/rust-clippy/pull/6044#event-3799579830) as well. Doing `Arc::make_mut(&mut self.vec).push(...)` or `Arc::make_mut(&mut self.string).push_str("...")` is a terrific and well performing copy-on-write pattern. Linting this with an enabled-by-default <kbd>performance</kbd> lint strikes me as an unacceptable false positive balance.
As of #6090 the documentation of this lint now contains:
> **Known problems:** This pattern can be desirable ...
which should indicate that we shouldn't be linting against correct, reasonable, well-performing patterns with an enabled-by-default lint.
Mentioning #6044, #6090.
r? `@yaahc,` who reviewed the lint.
---
changelog: Remove rc_buffer from default set of enabled lints
bors [Wed, 7 Oct 2020 04:58:13 +0000 (04:58 +0000)]
Auto merge of #6120 - phansch:replace-lazy-static, r=Manishearth
Replace some lazy_static usage with once_cell feature
This replaces some `lazy_static` usage with [`SyncLazy`](https://doc.rust-lang.org/nightly/std/lazy/struct.SyncLazy.html) of the unstable `once_cell` feature.
bors [Tue, 6 Oct 2020 22:33:57 +0000 (22:33 +0000)]
Auto merge of #6127 - ebroto:reinstate_forbid_restriction, r=flip1995
Reinstate test for forbid(clippy::restriction)
In [this commit](https://github.com/rust-lang/rust-clippy/pull/6126/commits/5747c15961da9d2d0b0dd775174d39f3b5961597) coming from rust-lang/rust (#6126) the test for `#![forbid(clippy::restriction)]` was removed because some restriction lints were being allowed after the forbid.
This change reinstates the test for `forbid` by using a separate file.
Yuki Okushi [Tue, 6 Oct 2020 07:26:11 +0000 (16:26 +0900)]
Rollup merge of #77560 - rschoon:fix-litkind-rc-bytebuf, r=lcnr
Fix LitKind's byte buffer to use refcounted slice
While working on adding a new lint for clippy (see https://github.com/rust-lang/rust-clippy/pull/6044) for avoiding shared ownership of "mutable buffer" types (such as using `Rc<Vec<T>>` instead of `Rc<[T]>`), I noticed a type exported from rustc_ast and used by clippy gets caught by the lint. This PR fixes the exported type.
This PR includes the actual change to clippy too, but I will open a PR directly against clippy for that part (although it will currently fail to build there).
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